Wire twisting plier



J. Tl STINSON 2,381,703

WIRE TWISTING PLIER Aug. 7; 1945.

Filed March 19, 1943 INVENTOR.

Patented Aug. 7, 1945 1 The instrument: relates to improvements 1 in correct, a systematic and convenient application of wire ligatures in the treatment of; medical and dental patients..,.

,QIn thetreatment. of medical and'rdental pa.-. tients; and where ,there exists sfracturedzlor broken bones and mal-posed teeth, wire ligatures are often necessaryas an adjuncttreatment.':- "There is, at present; a =direneedof i a more correct, :sys'- tematic and; conyenient .plier instrument :for s the twisting of wirerligatures within cavernous parts of the body,1;without: harm; :by: undue distorting. or-stretching. of the adjacent .tissues, and in: its manipulation or; use; an angular twisted: force tothe engaged who i ligature; iswnecessary for. a .-desired end or resultli:Wireiligatures are used totie r approximate. brokenjibonyr parts; positioning bone grafts,- gstraightening qsor properly-aligning the teeth, adjusting or stabilizing'splintsandrfor traction-andztraction 'supportEi-n properly occluding the teeth.

In this instrument, two open split-spring beaks engage the wire ligature at right angles to the long axis of the plier instrument, by closing together and locking the bent-handle parts which causes an adjusting bearing surface tension around the beak parts. While holding plier in one hand a shaft part is turned with the other hand causing a desired and systematic twist at right angles to the part.

Only one form of this invention is illustrated in th accompanying drawing, in which;

Figure 1 is a perspective view of the plier instrument.

Figure 2 is a sectional View of the split-housing and bearings, showing the relationship of gear assembly,

Figure 3 is a lan view of split-spring beaks, cog and cog-shaft assembly.

Figure 4 is a bracketed side view of the outer beak collar member and one of the beak members proper detached from the supporting body of the device; and

Figure 5 is an end face view of the beak collar member shown in side elevation in Figure 4.

The device as illustrated comprises the splithousing I; the split-spring beaks 2, 2, and collar 8, which is anchored to cog-shaft l0; the bentholding and adjusting parts 4, 4; the hand-type turn shaft 5; the similar cogs H, H; the similar ersmimb rw bearings I, I, all of which parts constitute the framework of this plier instrument.

The split-spring beak assembly is of three parts 2, 2, and 8, and is anchored on cog-shaft l0, and the beak parts 2, 2, are held open by small spring N VIREmwIs'rINGPiQIER am Stinson,Jonesbo1-0,La.

tailli ht-lain 19, 194 3, Serial No. 479,687

2 (cr m 149);

insert; l2. Thebeaks 2; 2, are serrated on inner andengaging surfaces for added traction purposes, while engaging the wire ligature. The split-housing ll,-encloses the assembly of cogs II, II, cog-shafts I0, 10'; and bearings I, I. The hand-operatedishaftti is fixedly connected axiallyto the cog-shaft Ill. 3

The housing assembly, hand-turn shaft and splitebeakassemblyare anchored flexibly from an extension ofz split-housinglha rt ,l, to benthandle holding parts LA, by means of a threaded bolt 3, which supports a bushing part 9, which maintains a disengagement and distancebetween the housing assembly I andbent-handle parts 4, 4,thus reducing friction and allowing a more lateral closingsurfacetension to engaging end of b'eak parts, 2, 2, on engaging wire ligature,

m'Ihe bent-handle end portions of .the plier instrumentarexnormally ur ecl'apart by aspring element 6':.which is somewhat weaker. than the aforesaid spring element 12, which handle portions are held in either hand at 6, 6, and when the device is used within the mouth or oral cavity, .insertion is made between the cheek and teeth,

while split-beaks 2, 2, engage the wire ligature that has been so positioned around the tooth, on the exposed ends of wire or wire loop. A locked closing is applied to 4, 4, by gripping with one hand at 6, 6, causing split-beaks 2, 2, to close or engage the wire ends or loop. With other hand rotate in either direction the turn-shaft 5, noting the number one-fourth, one-half, threefourths or full turns in the twisted wire ligature.

The reason why a controlled and systematic twist in a wire ligature is desired, is that most often a continuous ligation of the several teeth in the dental arch is necessary and the graduated turns on the twist allows ample strength and workable length for traction support,' whether the applied traction is of the elastic or rigid ype.

The features of this instrument is perfectly carried out in the manner shown in Figure 1, where it will be seen that its use is universal in its application within the mouth or any other cavity or recess part, and it will function in a more correct, systematic and convenient way and with full view while operating, and without harm by undue distorting or stretching the adjacent tissues.

I am aware that prior to my invention that plier instruments have been made for purposes of twisting wire, I therefore, do not claim a combination, broadly; but

in its utilitarian application, a manually operable shaft having an end portion mounted rotatably on said body member about an axis substantially at right angles to the axis of saidrotatabiebeak assembly, and a geared driving connection be tween said shaft and said beakassembly. 1

2. A wire twisting device of th character described, comprising a plierlike instrument which includes a body member insertablefreely in oral and other'cavernous areas of the human body, angularly-disposed, normally open, cooperatively. opposed beak members mounted rotatably on said body-member, a manually operable, lever-armed, plier-type, clamping element" pivotally mounted on said body member for closing said beak members in gripping engagement with a wire ligature that-is tobe twisted in its utilitarian application,

and -an angularly I disposed irotatable operating.

shaft-for 3,A wire-twisting device of the character described, comprising a-plierlike instrument which includes a body member insertable freely in oral and other cavernous areas of the. human body, cooperatively opposed, hinged xbeak members mounted rotatably on said body-'member and extendingslaterally therefrom, yieldabl means for holding said beak members normally in open imparting rotation to said beak memrelation to each other and returning them to such position, a pair of elongated clamping members mounted pivotally on said body member and cooperatively engageable at one end with said beak members t efiect closing of the latter in gripping engagement with a wire ligature that is to be twisted in its utilitarian application, the opposite end portions of said clamping members being turned and extended at an angle from the adjacent place of pivotal mounting on the body member and provided'with hand-grasp portions for effective manipulation of said clamping mem- ;bers, and a manually perable shaft mounted roelongated and extending in angular relation adjacent to and beyond said angularly extended manipulating end portions of said clamping members. 7

. '4. A surgicalwire twisting device of the character described, vcomprising cooperative rotatable beak members insertable in oral 'and other cavernous areas of the human bodyzand arranged and adapted for gripping a wire ligature'that is to be twisted in itsutilitarian application, angularly disposed, plier-like, members hingedly mounted on a common s'upportingbodywith said beak members, adjacent. end 1 portions: of said plier-like members cooperatively engaging: said beak members laterally and opposedly thereof for clamping said beak membersin gripping contact with the wire ligature,. and anelo'ngated angularly disposed, manually operable ,irotatable shaft having an angular 'driving connection at i one end with said. beak members for effecting rotation of the latter, said shaft having provision at its opposite end for positive manipulabl'e rotation of said shaft. I a 1 JAMIE THOMPSON STINSON.- 

